Monitoring Relays

Monitoring relays are a type of relay that trips a circuit breaker when a fault is detected. A relay is an electrically controlled switch that is used to turn the power on or off in a circuit. 




Monitoring relays are more sophisticated than regular relays, as they have adjustable operating conditions, whereas normal relays switch according to a fixed threshold. They measure a given parameter, such as voltage or temperature, and will trip a circuit breaker when the parameter gets too high or low. 




What are monitoring relays used for?


Monitoring relays have a wide range of uses, depending largely on the factor being monitored. For example, they can protect against overcurrent if measuring current, or they can detect an abnormally low frequency if frequency is being measured.




Types of monitoring relay


The main way in which monitoring relays differ is the function that they measure. This can be a number of things, including:



  • voltage

  • current

  • temperature

  • frequency


The factor that you need to measure will decide which monitoring relay you choose.


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Omschrijving Prijs Monitoring Application Supply Voltage Contact Configuration Voltage Sensitivity Electrical Phase Voltage Sensing Range Current Sensitivity Minimum Current Sensed Maximum Current Sensed Phase Sensitivity Time Delay Temperature Sensitivity Temperature Sensing Range Frequency Sensing Range
RS-stocknr. 131-791
FabrikantnummerZ-TN230/SS
FabrikantEaton
52,85 €
Each
Aantal stuks
- 230 V ac DPST - - - - - - - - - - 50 Hz
RS-stocknr. 179-3526
Fabrikantnummer184760 | EMR6-PH45
FabrikantEaton
9,20 €
Each
Aantal stuks
- - - - - - - - - - - - - -
RS-stocknr. 179-3516
FabrikantnummerEMR6-F500-G-1
FabrikantEaton
94,20 €
Each
Aantal stuks
Phase, Voltage 200 500 V ac - - - 200 500 V ac - - - - - - - 50 60 Hz
RS-stocknr. 179-3532
FabrikantnummerEMR6-AWM720-I-1
FabrikantEaton
236,70 €
Each
Aantal stuks
Phase, Voltage 450 720 V ac - - - 450 720 V ac - - - - 0.1 30 s - - 50 60 Hz
RS-stocknr. 179-3527
FabrikantnummerEMR6-A300-C-1
FabrikantEaton
167,20 €
Each
Aantal stuks
Phase, Voltage 160 300 V ac - - - 160 300 V ac - - - - 0.1 30 s - - 50 60 Hz
RS-stocknr. 179-3533
FabrikantnummerEMR6-AWM820-J-1
FabrikantEaton
236,70 €
Each
Aantal stuks
Phase, Voltage 530 820 V ac - - - 530 820 V ac - - - - 0.1 30 s - - 50 60 Hz
RS-stocknr. 179-3543
FabrikantnummerEMR6-W300-C-1
FabrikantEaton
178,70 €
Each
Aantal stuks
Phase, Voltage 160 300 V ac - - - 160 300 V ac - - - - 0.1 30 s - - 50 60 Hz
RS-stocknr. 179-3528
FabrikantnummerEMR6-A500-D-1
FabrikantEaton
148,70 €
Each
Aantal stuks
Phase, Voltage 300 500 V ac - - - 300 500 V ac - - - - 0.1 30 s - - 50 60 Hz
RS-stocknr. 179-3536
FabrikantnummerEMR6-AWN280-D-1
FabrikantEaton
189,60 €
Each
Aantal stuks
Phase, Voltage 180 280 V ac - - - 180 280 V ac - - - - 0.1 30 s - - 50 60 Hz
RS-stocknr. 179-3518
FabrikantnummerEMR6-I1-A-1
FabrikantEaton
190,10 €
Each
Aantal stuks
Current 24 240 V ac/dc - - 1 - - 0.003 A, 0.01 A, 0.1 A 0.03 A, 0.1 A, 1 A - 0.1 30 s - - -
RS-stocknr. 179-3541
FabrikantnummerEMR6-R400-A-2
FabrikantEaton
485,90 €
Each
Aantal stuks
Insulation 24 240 V ac/dc - - - 0 400 V ac - - - - - - - -
RS-stocknr. 179-3556
FabrikantnummerEMR6-T100-A-1
FabrikantEaton
206,90 €
Each
Aantal stuks
Temperature 24 240 V ac/dc - - - - - - - - - - 0 +100°C -
RS-stocknr. 102-6142
Fabrikantnummer134222
FabrikantEaton
191,09 €
Each
Aantal stuks
Phase 300 500 V ac DPDT - 3 - - - - - 0.1 30 s - - -
RS-stocknr. 179-3529
FabrikantnummerEMR6-AW300-C-1
FabrikantEaton
181,30 €
Each
Aantal stuks
Phase, Voltage 160 300 V ac - - - 160 300 V ac - - - - 0.1 30 s - - 50 60 Hz
RS-stocknr. 179-3537
FabrikantnummerEMR6-AWN500-D-1
FabrikantEaton
211,20 €
Each
Aantal stuks
Phase, Voltage 300 500 V ac - - - 300 500 V ac - - - - 0.1 30 s - - 50 60 Hz
RS-stocknr. 179-3519
FabrikantnummerEMR6-I15-A-1
FabrikantEaton
190,10 €
Each
Aantal stuks
Current 24 240 V ac/dc - - 1 - - 0.3 A, 1 A, 3 A 1.5 A, 5 A, 15 A - 0.1 30 s - - -
RS-stocknr. 179-3524
FabrikantnummerEMR6-N100-N-1
FabrikantEaton
95,10 €
Each
Aantal stuks
Level 110 130 V ac, 220 240 V ac - - - - - - - - - - - -
RS-stocknr. 179-3534
FabrikantnummerEMR6-AWN170-E-1
FabrikantEaton
189,20 €
Each
Aantal stuks
Phase, Voltage 90 170 V ac - - - 90 170 V ac - - - - 0.1 30 s - - 50 60 Hz
RS-stocknr. 179-3522
FabrikantnummerEMR6-N1000-A-1
FabrikantEaton
139,10 €
Each
Aantal stuks
Level 24 240 V ac/dc - - - - - - - - 0.1 30 s - - -
RS-stocknr. 179-3538
FabrikantnummerEMR6-R250-A-1
FabrikantEaton
231,50 €
Each
Aantal stuks
Insulation 24 240 V ac/dc - - - 0 250 V ac, 0 300 V dc - - - - - - - -